That's really cool Acorn, looks like people could create custom widgets with this. Is there any further documentation on it or did you just figure it out yourself?
Edit: Here are some additional things I've found in some other xwr files. Not sure what they all do but you can add classes to the exported div which is good to know too. Helplink adds a button to the help that opens web page for further help.
Code:
<RenderDelay>6000</RenderDelay>
<Force100Percent/>
<Classes>xr_reset</Classes>
<SnippetWidth>550</SnippetWidth>
<SnippetHeight>600</SnippetHeight>
<HelpLink>http://www.xara.com/us/widgets/forms</HelpLink>
Edit2: For reference SnippetWidth and SnippetHeight add width and height to the exported div.
I see now you have a bunch of older posts on this so you probably know already but just posting for reference.
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